<!DOCTYPE HTML>
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<title>Highcharts Example</title>

	<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
	<script type="text/javascript">
		$(function () {
			$('#container').highcharts({

						chart: {
							type: 'gauge',
							plotBorderWidth: 1,
							plotBackgroundColor: {
								linearGradient: {x1: 0, y1: 0, x2: 0, y2: 1},
								stops: [
									[0, '#FFF4C6'],
									[0.3, '#FFFFFF'],
									[1, '#FFF4C6']
								]
							},
							plotBackgroundImage: null,
							height: 200
						},

						title: {
							text: 'VU meter'
						},

						pane: [{
							startAngle: -45,
							endAngle: 45,
							background: null,
							center: ['25%', '145%'],
							size: 300
						}, {
							startAngle: -45,
							endAngle: 45,
							background: null,
							center: ['75%', '145%'],
							size: 300
						}],

						yAxis: [{
							min: -20,
							max: 6,
							minorTickPosition: 'outside',
							tickPosition: 'outside',
							labels: {
								rotation: 'auto',
								distance: 20
							},
							plotBands: [{
								from: 0,
								to: 6,
								color: '#C02316',
								innerRadius: '100%',
								outerRadius: '105%'
							}],
							pane: 0,
							title: {
								text: 'VU<br/><span style="font-size:8px">Channel A</span>',
								y: -40
							}
						}, {
							min: -20,
							max: 6,
							minorTickPosition: 'outside',
							tickPosition: 'outside',
							labels: {
								rotation: 'auto',
								distance: 20
							},
							plotBands: [{
								from: 0,
								to: 6,
								color: '#C02316',
								innerRadius: '100%',
								outerRadius: '105%'
							}],
							pane: 1,
							title: {
								text: 'VU<br/><span style="font-size:8px">Channel B</span>',
								y: -40
							}
						}],

						plotOptions: {
							gauge: {
								dataLabels: {
									enabled: false
								},
								dial: {
									radius: '100%'
								}
							}
						},


						series: [{
							data: [-20],
							yAxis: 0
						}, {
							data: [-20],
							yAxis: 1
						}]

					},

					// Let the music play
					function (chart) {
						setInterval(function () {
							var left = chart.series[0].points[0],
									right = chart.series[1].points[0],
									leftVal,
									inc = (Math.random() - 0.5) * 3;

							leftVal = left.y + inc;
							rightVal = leftVal + inc / 3;
							if (leftVal < -20 || leftVal > 6) {
								leftVal = left.y - inc;
							}
							if (rightVal < -20 || rightVal > 6) {
								rightVal = leftVal;
							}

							left.update(leftVal, false);
							right.update(rightVal, false);
							chart.redraw();

						}, 500);

					});
		});

	</script>
</head>
<body>
<script src="../../js/highcharts.js"></script>
<script src="../../js/highcharts-more.js"></script>
<script src="../../js/modules/exporting.js"></script>

<div id="container" style="width: 600px; height: 300px; margin: 0 auto"></div>

</body>
</html>
